Tach Question .......
02-13-2005, 05:55 PM
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Tach Question .......
I am looking for a tach and have seen the 3 at Tower. The Tower, The GloBee IntelliTach, and the Hobbico. Anyone using one of these? I do not want to spend more that $30 USD. I am in no need of one that is accurate to 1-3 RPM's, just need one to give me a good reading and be constant.
I saw this quote about the GloBee: "Because of its sensitivity, this does not know whether it is looking at a propeller or an incandescent or fluorescent light, which typically strobes at 60 cycles per second or 3600 cycles per minute. When set for 2-blades it will read 360 or 3600, 3-blades: 240 or 2400 and 4-blades: 180 or 1800. This is a quick way to test the calibration. In direct sunlight this will read zero when turned ON."
Do all these units have a way to calibrate from a know source?
I am leaning towards the GloBee, let me know please.
Thanks,
Fred
I saw this quote about the GloBee: "Because of its sensitivity, this does not know whether it is looking at a propeller or an incandescent or fluorescent light, which typically strobes at 60 cycles per second or 3600 cycles per minute. When set for 2-blades it will read 360 or 3600, 3-blades: 240 or 2400 and 4-blades: 180 or 1800. This is a quick way to test the calibration. In direct sunlight this will read zero when turned ON."
Do all these units have a way to calibrate from a know source?
I am leaning towards the GloBee, let me know please.
Thanks,
Fred
02-13-2005, 07:23 PM
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RE: Tach Question .......
the globee is a great tach...
anyway, you can also calibrate from your monitor. check your refresh rate, and then just bring up a white screen and hold the tach to it. technically though you can't calibrate them since you can't change settings, and they shouldn't need it anyway, they are just pulse counters.
anyway, you can also calibrate from your monitor. check your refresh rate, and then just bring up a white screen and hold the tach to it. technically though you can't calibrate them since you can't change settings, and they shouldn't need it anyway, they are just pulse counters.
